[all-commits] [llvm/llvm-project] 936599: [AArch64][GlobalISel] Add support for pre-indexed ...

[Amara Emerson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 93659947d2ee76348e300b83f035e054909d56b0
      https://github.com/llvm/llvm-project/commit/93659947d2ee76348e300b83f035e054909d56b0
  Author: Amara Emerson <amara at apple.com>
  Date:   2023-10-26 (Thu, 26 Oct 2023)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-indexed-load-stores.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/store-merging.ll
    M llvm/test/CodeGen/AArch64/arm64-indexed-memory.ll
    M llvm/test/CodeGen/AArch64/arm64-indexed-vector-ldst.ll

  Log Message:
  -----------
  [AArch64][GlobalISel] Add support for pre-indexed loads/stores. (#70185)

The pre-index matcher just needs some small heuristics to make sure it
doesn't cause regressions. Apart from that it's a simple change, since
the only difference is an immediate operand of '1' vs '0' in the
instruction.